Question about 2003 Ford Expedition

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Replaced fuel pump, fuel filter and relays but my 2003 ford expedition will only run while being sprayed with starter fluid

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  • 293 Answers

Check for leaking intake manifold or vacuum hoses.

Posted on Oct 29, 2012

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Posted on Jan 02, 2017

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SOURCE: 2003 Ford Expedition, low idle, no power while driving.

sounds like water in gas. add gas line antifreeze. 2 bottleshould do it.

Posted on Oct 27, 2009

  • 71 Answers

SOURCE: how to replace fuel pump on a ford expedition 2003

you would have to drop the tank ont this one. make sure you de-pressurize the system before you start. disconnect the lines going to the tank and put a jack under. loosen the bolts and drop the tank slowly.

Posted on Nov 14, 2009

  • 1382 Answers

SOURCE: 2001 expedition cranks but wont start

If the engine cranks over normally when you attempt to start you car, but the engine does not start, the problem may be NO FUEL, NO SPARK or NO COMPRESSION. The engine needs adequate fuel pressure, a properly timed spark and normal compression to start.

1) To find why the engine won't start, remove the air inlet tube from the throttle body, push the throttle open and spray a small amount of aerosol starting fluid into the engine. Crank the engine. If it has spark and compression but NO FUEL, it will start and run a few seconds before dying. If it does NOT start, it probably has NO SPARK.

2)Another method to check for spark is to pull a spark plug wire off of a spark plug (if it has plug wires, coil-on-plug ignitions do not) and place the open end of the plug wire near a metal surface on the engine. Have a helper crank the engine while you watch for a spark. DO NOT hold the wire while doing this as it can shock you. If you see a spark, the problem is not spark, but most likely NO FUEL or NO COMPRESSION. If you do not see a spark, the problem is in the IGNITION CIRCUIT.

3)Proper fuel pressure is critical for fuel injected engines to start and run. You should hear the fuel pump inside the fuel tank buzz for a couple of seconds when the ignition is turned on (no buzz means the pump is not running and the engine is not getting fuel). You can smell the tailpipe for gasoline vapors after cranking the engine. If you smell gas, the problem is likely not fuel but NO SPARK. You can also remove the plastic cap and press the schraeder valve test fitting on the fuel rail to see if there is any fuel pressure to the engine (not a very accurate test because fuel pressure must be at a certain level for the engine to start, for that you need a gauge). Even so, no fuel at the fuel rail would tell you fuel is not getting to the engine..

Posted on Mar 21, 2010

  • 5467 Answers

SOURCE: 2001 ford focus will not start. The engine will

I will try to help you. You are correct about the starting fluid, if it has fire starting fluid should do something. So the problem must be either no fire to the plugs or the timing belt is broke.

Check to see if the plugs have spark. If they do not, then get with the Autoparts store and ask if your car needs a Ignition relay to run. Then ask if your car takes a rubber timing belt. If your car does not have a rubber timing belt try the Ignition relay. If you do have a rubber belt check behind the shield in front of the engine to see if the timing belt is broke.

The timing belt is different than the serpetine belt that drives the pulleys. Cars with rubber timing belts have both belts. Should your timing belt be broken it is not an expensive repair. But you will need to details on replacement of that part.

Posted on Apr 18, 2010

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2 Answers

Fuel filter change did not take care of the problem car still shuts down after 20 minutes of running will not start again for about 20 minutes anyone know what the next move maybe


Have a pressure check run on your fuel pump. Sounds like fuel pump is ready to totally fail. Just had this happen on my ford expedition. And that was painful changing out fuel pump. Took 4 hours and was a dirty job too

Sep 14, 2015 | Cars & Trucks

2 Answers

What is the fuel issue?


Under hood fuse/relay panels on these are bad for water., when it is a hard rain. If 303 is the fuel relay, it wasn't fixed. I have tore panels like these apart to see what was wrong. And they are a mess. Copper wires get hot and bend, shorting out all kinds or fuses and relays. I just replace them now. And cover them. All I can figure is water pours threw them on hard rains. Even when the vehicle is sitting. Repaired many of them.

Aug 07, 2015 | 2003 Ford Expedition

2 Answers

Where is the fuel pump relay switch on a 1988 Ford Crown Victoria 5.0


The computer controls the injection of the fuel. If you look at the wiring diagram you will note the bottom 4 pins that are the negative and positive to the left and right injection. Atleast on my 1991 it is .Could be the ecm or computer is sending a false signal or not sending one at all. A sign of this is the fuel pump in the gas tank can be heard and will continue to run as if pressure in the fuel system is not building. Tthe truck want crank as if no fuel. When starter fluid is injected into the Throttle body the egine will start and run untill fluid is used up. It will keep running as long as fluid is added.

Nov 05, 2014 | 1988 Ford Crown Victoria

2 Answers

I have an 2003 ford expedition that just stopped . i first changed fuel filter, fuel pump, cleaned injectors, changed filters, spark plugs, cleaned throtle, then had it checked further and tjhe mechanic...


Probably the inertia switch for the fuel pump..You owners manual should show you where its located..See if the button has pop up ..If it has push it back down until it clicks..If it wont stay down then hold it down and see if it will start..If it does you will have to replace it..If thats all good then check the relay for the fuel pump..

Sep 07, 2011 | 2003 Ford Expedition

1 Answer

I have 2003 expedition that wont start,, it already has a new battery and starter..?


If have replaced the battery and starter then most likely your problem may be coming from the alternator. The alternator is in charge of providing a constant charge to the battery for all electrical components to run. If that does not work then try checking your fuel pressure to see if the fuel pump is not supplying enough fuel for ignition. Spray starter fluid inside the intake and if it starts long enough then you know that your problem is not fuel related.

Hope this Helps!

Jun 07, 2011 | 2003 Ford Expedition

1 Answer

Turns over but won't start. sprayed starter fluid and started temporarily. is it the fuel pump?


I would check the fuel pump fuse and fuel pump relay. Also check that the inertia switch doesn't need reset. If none of those are the problem, then the fuel pump is probably bad.

Nov 10, 2010 | 2001 Ford Expedition

1 Answer

Only starts when starter fluid is sprayed into intake and then only for a sec,what is wrong


Fuel filter could be plugged, check to see if fuel pump is working, when you turn on your ignition you should hear a bussing sound from under rear of vehicle for a few seconds. If you don't hear this check for blown fuel pump relay or fuse

Jul 26, 2010 | 2004 Ford Expedition

1 Answer

Expedition won't start or even act like it wants to. Just cranks and cranks. I feel it might be fuel pump.


easy way to test for it being fuel.open air filter box spray alittle starter fluid.then try starting if it runs or fires over its fuel related.if not then its sensor or fuse related.hope that helps.make sure the fluid is ma safe.meaning mass airflow sensor safe.as some starter fluids will mess them up.

Nov 27, 2009 | 2000 Ford Expedition

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